add codecov to tests

.github/workflows/tests.yml

@@ -54,3 +54,6 @@ jobs:
         EVENTBRITE_API_PUBLIC_TOKEN: ${{ secrets.EVENTBRITE_PUBLIC_TOKEN }}
         SOCIAL_AUTH_OPENSTAX_KEY: ${{ secrets.SOCIAL_AUTH_OPENSTAX_KEY }}
         SOCIAL_AUTH_OPENSTAX_SECRET: ${{ secrets.SOCIAL_AUTH_OPENSTAX_SECRET }}
+    - uses: codecov/codecov-action@v2
+      with:
+        token: ${{ secrets.CODECOV_TOKEN }}

manage.py

@@ -2,9 +2,38 @@
 import os
 import sys
 
-if __name__ == "__main__":
+def main():
     os.environ.setdefault("DJANGO_SETTINGS_MODULE", "openstax.settings")
 
-    from django.core.management import execute_from_command_line
+    # run coverage.py around tests automatically
+    try:
+        command = sys.argv[1]
+    except IndexError:
+        command = "help"
+
+    running_tests = command == "test"
+    if running_tests:
+        from coverage import Coverage
 
+        cov = Coverage()
+        cov.erase()
+        cov.start()
+
+    try:
+        from django.core.management import execute_from_command_line
+    except ImportError as exc:
+        raise ImportError(
+            "Couldn't import Django. Are you sure it's installed and "
+            "available on your PYTHONPATH environment variable? Did you "
+            "forget to activate a virtual environment?"
+        ) from exc
     execute_from_command_line(sys.argv)
+
+    if running_tests:
+        cov.stop()
+        cov.save()
+        covered = cov.report()
+
+
+if __name__ == "__main__":
+    main()

requirements/base.txt

@@ -10,7 +10,8 @@ CacheControl==0.12.5
 certifi==2020.11.8
 cffi>=1.15.0
 chardet==3.0.4
-cryptography>=35.0.0
+coverage==6.2
+cryptography>=36.0.0
 defusedxml==0.6.0
 distro==1.5.0
 Django==3.2.5